2results about How to "Increase wind capacity" patented technology

The utility model relates to wind driven generator technical field discloses a wind driven generator, its characterized in that, including fan main shaft, first blade layer, first blade layer includes a plurality of first blade, first blade is along the circumferential interval distribution of fan main shaft, second blade layer, second blade layer includes a plurality of second blade, second blade is along the circumferential interval distribution of fan main shaft, and second blade layer is set in the circumferential of fan main shaft relative to first blade layer staggered angle, the wind driven generator provided by the utility model, through setting first blade layer and second blade layer, and second blade layer is in the circumferential of fan main shaft relative to first blade layer staggered angle, can reduce the wind catching empty window period of fan rotation, improve the utilization of effective wind sweeping area, strengthen the overall wind catching capacity, simultaneously, the difference of angle of attack change that two layers of blades experience in the rotation process, can alleviate dynamic stall phenomenon, help to promote the wind energy conversion efficiency.

The invention relates to the technical field of air purification and discloses a liftable environment-friendly window type fresh air ventilator which comprises a shell mechanism, the shell mechanism comprises a first cover shell, a heater used for adjusting temperature is fixedly installed at an inner side port of the first cover shell, and a blocking net used for blocking dust is fixedly installed on the inner side of the heater. The inner side of the blocking net is fixedly connected with an air outlet plate in a covering mode, an outer plate with the hollow surface is fixedly connected to an outer side port of the first cover shell, the shell mechanism is connected with a core assembly in a covering mode, the core assembly is located between the heater and the outer plate, the core assembly comprises a fan mechanism, and the fan mechanism comprises a first support fixedly connected with the first cover shell. The lower side of the first support is sequentially and fixedly connected with fan assemblies used for guiding, each fan assembly comprises a fan shell fixedly connected with the first support, and the outer side of each fan shell is fixedly connected with a dust net used for filtering dust in a covering mode. According to the liftable environment-friendly window type fresh air ventilator, fresh air can be effectively guided in, so that the working efficiency is improved.